@article{506,
  author = {Akos Ledeczi and Thomas Hay and Peter Volgyesi and Robert Hay and Andras Nadas and Subash Jayaraman},
  title = {Wireless Acoustic Emission Sensor Network for Structural Monitoring},
  abstract = {The paper presents a prototype wireless system for the detection of active fatigue cracks in aging railways bridges in real-time.  The system is based on a small low-cost sensor node, called an AEPod, that has four acoustic emission (AE) channels and a strain channel for sensing, as well as the capability to communicate in a wireless fashion with other nodes and a base station.  AEPods are placed at fracture-critical bridge locations. The strain sensor detects oncoming traffic and triggers the AEPod out of its hibernation mode.  As the train stresses the fracture-critical member, acoustic emission and strain data are acquired.  The data are compressed and filtered at the AEPod and transmitted off the bridge using cell-phone communication.},
  year = {2009},
  journal = {IEEE Sensors Journal},
}